Oral Fluid

Drug Tests

Convenient CollectionLabCorp's oral fluid drug testing program provides a simple method to collect chain-of-custody drug screen specimens almost anywhere. The oral fluid collection is directly observed, making it less susceptible to specimen adulteration.1 The donor simply opens the sealed collection device, places it in his or her mouth, and the collector transfers the specimen into the transport tube for shipment to the laboratory.

Our oral fluid drug test profile contains

Amphetamine/methamphetamine/ecstasy

Barbiturates

Benzodiazepines

Cannabinoid (THC)

Cocaine

Ethyl Alcohol

Opiates (codeine, morphine, 6-acetylmorphine)

Phencyclidine (PCP)

Propoxyphene

Results for specimens that screen negative for all drugs are generally available within 24 hours after specimens are received at the laboratory. Results for confirmation testing of presumptive positive screens are usually available within an additional 72 hours.

FAQs About Oral Fluid Drug Testing

Q: Why is the oral fluid specimen placed in a fluid buffer?
The buffer solution is used to inhibit bacterial growth.

Q: What is the drug detection window for oral fluid testing?Depending on the drug used, dose, and route of administration, a drug may be detected in oral fluid in less than one hour and remain detectable for five up to 48 hours after last use.1,2

Q: How does the drug detection window for oral fluid compare to urine and hair?Drug detection times vary depending on the dose, sensitivity of the testing method used, preparation and route of administration, duration of use (acute or chronic), the matrix that is analyzed, the molecule or metabolite that is looked for, the pH and concentration of the matrix (urine, oral fluid), and variations in metabolic and renal clearance. In general, the detection time is longest in hair, followed by urine and oral fluid. Drugs in hair may be detectable for up to 90 days, whereas drugs in urine are generally detectable for one to seven days (or longer in chronic users) and in oral fluid from five to 48 hours.2

Q: Can substances such as food, beverages, over-the-counter medication, and mouthwash affect the oral fluid drug test results?Yes. For this reason, the donor is to refrain from consumption of food or beverages for 10 minutes prior to specimen collection.1